<div class="header">
    <h2 class="z cl"><a href="index.html"><img src="${base}/back/img/logo1.png"></a></h2>
    <div class="y cl">
        <a target="_blank" href="${base}/blog/index">网站首页</a>
        <a id="top-logout" href="javascript:">退出</a>
    </div>
</div>